Unbreak ARMBaseRegisterInfo::copyRegToReg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85787 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Thumb2/2009-11-01-CopyReg2RegBug.ll b/test/CodeGen/Thumb2/2009-11-01-CopyReg2RegBug.ll
new file mode 100644
index 0000000..216f3e3
--- /dev/null
+++ b/test/CodeGen/Thumb2/2009-11-01-CopyReg2RegBug.ll
@@ -0,0 +1,29 @@
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin -relocation-model=pic -disable-fp-elim -mcpu=cortex-a8
+
+define arm_apcscc void @get_initial_mb16x16_cost() nounwind {
+entry:
+ br i1 undef, label %bb4, label %bb1
+
+bb1: ; preds = %entry
+ br label %bb7
+
+bb4: ; preds = %entry
+ br i1 undef, label %bb7.thread, label %bb5
+
+bb5: ; preds = %bb4
+ br label %bb7
+
+bb7.thread: ; preds = %bb4
+ br label %bb8
+
+bb7: ; preds = %bb5, %bb1
+ br i1 undef, label %bb8, label %bb10
+
+bb8: ; preds = %bb7, %bb7.thread
+ %0 = phi double [ 5.120000e+02, %bb7.thread ], [ undef, %bb7 ] ; <double> [#uses=1]
+ %1 = fdiv double %0, undef ; <double> [#uses=0]
+ unreachable
+
+bb10: ; preds = %bb7
+ ret void
+}